<template>
  <view>
    <view class="goods_list">
      <view v-for="(goods,i) in goodsList" :key="i" @click="gotoDetail(goods)">
        <!-- props 的名字要和父组件传递的名字一致 -->
        <my-goods :goods="goods"></my-goods>
      </view>
    </view>
  </view>
</template>

<script>
  export default {
    data() {
      return {
        queryObj: {
              // 查询关键词
              query: '',
              // 商品分类Id
              cid: '',
              // 页码值
              pagenum: 1,
              // 每页显示多少条数据
              pagesize: 10
            },
            goodsList: [],
            total: 0,
            isloading: false
      };
    },
    onLoad(options) {
      this.queryObj.query=options.query||''
      this.queryObj.cid=options.cid||''
      this.getGoodsList()
    },
    methods:{
      async getGoodsList(cb){
         this.isloading = true
        const {data:res} = await uni.$http.get('/api/public/v1/goods/search',this.queryObj)
        this.isloading = false
        // 只要数据请求完毕，就立即按需调用 cb 回调函数
          cb && cb()
        if(res.meta.status!==200){
          return uni.$showMsg()
        }
        this.goodsList=[...this.goodsList,...res.message.goods]
        this.total=res.message.total
      },
      gotoDetail(goods){
        uni.navigateTo({
          url:'/subpkg/goods_detail/goods_detail?goods_id=' + goods.goods_id
        })
      }
    },
    onReachBottom(){
      if(this.queryObj.pagenum *this.queryObj.pagesize>=this.total){
        return uni.$showMsg('数据加载完毕！')
      }
      if (this.isloading) return
      this.queryObj.pagenum +=1
      this.getGoodsList()
    },
    // 下拉刷新的事件
    onPullDownRefresh() {
      // 1. 重置关键数据
      this.queryObj.pagenum = 1
      this.total = 0
      this.isloading = false
      this.goodsList = []
    
      // 2. 重新发起请求
      this.getGoodsList(() => uni.stopPullDownRefresh())
    }
  }
</script>

<style lang="scss">
</style>
